Treated in 1942, Anne Miller became the first person whose life was saved using penicillin. The drug was so scarce and expensive that her medical team saved her urine in order to reclaim up to 70 percent of the penicillin given to her.

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13 Questions About How the Human Body Works Answered

How do people breathe in and out? What’s the body’s biggest organ? What causes a bruise? This list answers these questions and others about how the human body works. Earlier versions of these questions and answers first appeared in the second edition of The Handy Answer Book for Kids (and Parents)